催化学报

催化学报 ›› 2012, Vol. 33 ›› Issue (8): 1360-1366.DOI: 10.3724/SP.J.1088.2012.20317

• 研究论文 • 上一篇    下一篇

适合 SBA-15 介孔材料工业化生产的改良方法

李艳荣1, 宋明娟1, 顾海芳2, 黄曜2, 牛国兴1,*, 赵东元1   

  1. 1复旦大学化学系, 上海 200433; 2复旦大学材料系, 上海 200433
  • 收稿日期:2012-03-17 修回日期:2012-04-16 出版日期:2012-08-01 发布日期:2012-08-01

Improved Synthesis of SBA-15 Mesoporous Silica Fitting for Industrial Production

LI Yanrong1, SONG Mingjuan1, GU Haifang2, HUANG Yao2, NIU Guoxing1,*, ZHAO Dongyuan1   

  1. 1Department of Chemistry, Fudan University, Shanghai 200433, China; 2Department of Materials Science, Fudan University, Shanghai 200433, China
  • Received:2012-03-17 Revised:2012-04-16 Online:2012-08-01 Published:2012-08-01

PDF

990

被引次数

6

摘要： 在 SBA-15 介孔材料 100 L 中试和 2 m3 工业放大合成基础上, 采用多次水解合并晶化、母液循环使用和以工业正硅酸乙酯 (TEOS) 原料为硅源三种改良方法, 提高 SBA-15 材料的合成效率, 减少废酸水排放和降低原料成本. 结果表明, 母液经加热蒸除乙醇至 5% 和工业原料 TEOS 经蒸除沸点低于 163 oC 的前馏分后使用, 在有效保证合成出结构性能良好 SBA-15 材料的同时, 可使生产效率提高 1 倍, 分别减少 50% 和 90% 三嵌段共聚物和盐酸用量, 且几乎无废水排放, 最终节约 SBA-15 原料成本约 60%. 这些改良方法有利于 SBA-15 材料工业生产时的环境保护和成本控制, 具有很高可行性.

关键词: SBA-15, 介孔材料, 工业生产, 成本控制, 母液循环, 环境友好

Abstract: On the basis of scale-up synthesis of SBA-15 silica in 100 L and 2 m3 reactors, some improved methods were used to prepare SBA-15 silica by crystallizing under high ratio of SiO2/H2O, recycling mother liquid, and using the industrial raw material of TEOS as Si source. It is necessary to openly heat the mother liquid over 95 oC for 2 h to evaporate ethanol and distill the industrial material of TEOS to remove the fractions less than 163 oC before they are used. By these ways, almost no wastes of acid and water are discharged; 50% of P123 and 90% of HCl are saved, respectively, and the cost of SBA-15 greatly drops to 40% of the original. Furthermore, the preparation efficiency increases as twice as before. Therefore, they have great advantages in industrial production of SBA-15 silica for the purposes of environmental protection and cost control.

Key words: SBA-15, mesoporous silica, industrial production, cost control, recycling mother liquid, environmental benign